KR960006478Y1 - Helical reduction gear falling down protection device for elevator - Google Patents

Abstract

None.

Description

Fall prevention device of helical reducer for elevator

1 is a plan view of the upper housing of the helical reducer for an elevator opened.

2 is a cross-sectional view of an installation state of a low speed bearing cap of a conventional helical reducer for an elevator.

Figure 3 is an exploded perspective view of the fall prevention device of the helical reducer for an elevator according to the present invention.

4 is a plan sectional view showing the coupling state of FIG.

* Explanation of symbols for main parts of the drawings

16: Output Shaft 20: Hoist Sheave

22: low speed bearing 24: upper housing

26: low speed bearing cap 28: liner

30: anti-rotation jaw 32: fall prevention cap

34: support jaw 36: support jaw insertion hole

40: bolt fitting 42: fastening hole

The present invention relates to a fall prevention device of an helical reducer for an elevator, and more particularly, to support a low speed bearing fitted to the rear end of an output shaft in a helical reducer having an elevator hoisting sieve. It is installed inside the low-speed bearing cap (Cap) and relates to the fall prevention device of the helical reducer for elevator to prevent the entire output shaft including the hoisting sieve by the weight of the hoisting sieve when the upper housing is opened. .

In general, as shown in FIG. 1, the helical reducer 10 for an elevator is provided with an input shaft 14 fitted on one side of the lower housing 12 from an outside thereof, and an output shaft 16 on the opposite side thereof. It is installed, the helical between the input shaft 14 and the output shaft 16 is composed of a plurality of reduction gear 18 for reducing the rotational speed of the input shaft 14 to be transmitted to the output shaft 16, such a helical In the reducer 10, a hoisting sheave 20 wound with a lifting rope for holding an elevator is fitted to an outer end of the output shaft 16, and an outer end of the output shaft 16 is connected to the outer periphery of the output shaft 16. The low speed bearing 22 is inserted to guide the rotation smoothly, and the low speed bearing 22 is supported from the outside of the low speed bearing 22 with the upper and lower housings 12 and 24 interposed therebetween. Low speed bearing Covering the 26 other hand, above the lower housing 12, it is fastened to the upper housing 24.

In the helical reducer 10 as described above, the input shaft 14 is rotated at high speed by the power applied from the outside, and this rotational force is converted to a low speed through the reduction gear 18 such as an internal helical gear, and then the output shaft 16. And the elevator is lifted as it rotates the hoisting sheave 20.

In such an elevator helical reducer, the hoisting sheave 20 is fitted to the outer end of the output shaft so that the load acts on the output shaft 16 in a biased manner. In order to repair and repair the low speed bearing cap 26, the upper housing 24 is released from the lower housing 12 at the moment of opening, and the hoisting sheave 20 is fitted by the weight of the hoisting sheave 20. There was a serious problem that the entire output shaft 16 of is separated and is inverted.

The present invention is to solve such a conventional problem, an input shaft that is rotated at a high speed by receiving power from the outside is inserted into one side of the lower housing, an output shaft rotated at a low speed is installed on the opposite side, the input shaft And a plurality of reduction gears are installed between the output shaft and the low speed bearing outer end fitted to the outer periphery of the inner end of the output shaft, and the inside of the low speed bearing cap in an elevator helical reducer having a structure in which a low speed bearing cap is supported for its support. By inserting a separate fall prevention cap into the outer side of the lower housing, the entire output shaft in the state where the hoisting sheave is fitted by the weight of the hoisting sheave fitted to the outer end of the upper shaft when opening the upper housing according to the necessity of repair and replacement of parts To prevent it from falling out of the state It is an object of the present invention to provide a fall prevention device of a helical reducer for an elevator that can be used to improve workability.

Hereinafter, the present invention will be described in more detail with reference to the accompanying drawings.

As shown in FIG. 3, the input shaft 14 rotates at a high speed by receiving power from the outside, and the output shaft 16 rotates at a low speed on one side of the lower housing 12. And a plurality of reduction gears 18 are engaged between the input shaft 14 and the output shaft 16, and supported at an end of the low speed bearing 22 fitted on the outer circumference of the inner end of the output shaft 16. While the low-speed bearing cap 26 for the cover is covered, between the outer surface of the low-speed bearing cap 22 and the lower housing 12, a separate for adjusting the tightening force for the low-speed bearing 22 of the low-speed bearing cap 26 In the helical reducer for an elevator having a structure in which a liner 28 is fitted, the lower housing 12 is fitted with a fall prevention cap 32 in which an anti-rotation jaw 30 is integrally formed inside the low speed bearing cap 26. It is characterized by being coupled to the outer surface of the.

In the present invention, the fall prevention cap 32 is formed in the shape of a disc, but the inner side is in close contact with the outer edge of the low-speed bearing 22 of the cylindrical anti-rotation jaw 30 to prevent the rotation of the output shaft 16 ) Is integrally formed, and at the center thereof, the support jaw 34 which protrudes from the inner surface of the ordinary low speed bearing cap 26 and supports the low speed bearing 22 in contact with the inner edge of the rear side of the low speed bearing 22. ) Support jaw insertion hole 36 is formed to insert the bolt fitting hole 40 into which the bolt 38 for engagement with the outer surface of the lower housing 12 is inserted at the edge portion thereof, and the upper housing. 24, a fastening hole 42 for interlocking with the low speed bearing cap 26 and the liner 28 is formed.

The operation of the present invention as described above is as follows.

As shown in FIG. 4, in the state in which the output shaft 16 is fitted in the lower housing 12, the fall prevention cap 32 is formed on the outer end surface of the low-speed bearing 22 fitted on the inner circumferential edge of the output shaft 16. As shown in FIG. The anti-rotation jaw (30) of close contact with the bolt fitting hole (40) formed at the edge of the fall prevention cap (32) is fixed to the outer side of the lower housing (12) by inserting the bolt (38) from the outside .

In this state, the liner 28 is positioned on the outer surface of the fall prevention cap 32, and then the low speed bearing cap 26 is coupled from the outside thereof, and the support protrudes from the inner surface of the low speed bearing cap 26. Insert the jaw 34 into the support jaw insertion hole 36 formed at the center of the liner 28 and the fall prevention cap 32, and fasten the bolts 38 to the fastening holes 42 formed at the respective edges. .

When the present invention is applied, the low-speed bearing cap is loosened due to the need to adjust the number of liners or the replacement of parts such as the input shaft, since it is fixedly coupled to the lower housing outer surface while a separate fall prevention cap is fitted on the inner surface of the low-speed bearing cap. Even if the upper housing is opened, the low-speed bearing fitted to the outer periphery of the output shaft cannot be rotated by the end of the rotation prevention jaw protruding from the inner side of the fall prevention cap. Therefore, there is an effect that the repair work and replacement parts can be easily performed.

Claims (2)

On one side of the lower housing 12, an input shaft 14 which is rotated at high speed by receiving power from the outside is fitted, and an output shaft 16 which is rotated at a low speed is fitted on the opposite side thereof, and the input shaft 14 and the output shaft 16 are fitted. A plurality of reduction gears (18) are interlocked between each other and the end of the low speed bearing (22) fitted on the inner circumference of the output shaft (16) is covered with a low speed bearing cap (26) for its support. In the elevator helical reducer of the structure that the liner 28 for adjusting the tightening force of the low-speed bearing cap 26 is fitted between the low-speed bearing cap 22 and the lower housing 12 outer surface, the Conduction prevention device of the helical reducer for elevator, characterized in that the coupling is formed on the inner side of the lower housing 12 by inserting the fall prevention cap 32 integrally formed with the anti-rotation jaw 30 inside the low-speed bearing cap 26. . The cylindrical anti-rotation cap of claim 1, wherein the fall prevention cap 32 is formed in a disc shape, and is in close contact with an outer edge of the rear side of the low speed bearing 22 on an inner side thereof to prevent rotation of the output shaft 16. 30 is integrally formed, and at the center thereof, a supporting jaw supporting the low speed bearing 22 in a state protruding from the inner side of the conventional low speed bearing cap 26 and abutting the inner edge of the rear side of the low speed bearing 22 ( A support jaw insertion hole 36 for fitting 34 is formed, and a bolt fitting hole 40 into which a bolt 38 for engagement with an outer surface of the lower housing 12 is fitted at an edge thereof, and the upper portion thereof. Conduction prevention device of the helical reducer for an elevator, characterized in that the fastening hole 42 for mutual fastening with the housing 24, the low-speed bearing cap 26 and the liner 28.